Windows XP does support the exFAT file system format. The Update for Windows XP (KB955704) hotfix is available here. exFAT works great with the SD card I share between a Windows 7 RC (at office) and a Windows XP (at home) notebook.

Windows XP does support the exFAT file system format. The Update for Windows XP (KB955704) hotfix is available here. exFAT works great with the SD card I share between a Windows 7 RC (at office) and a Windows XP (at home) notebook.